Earth-auger



(No Model.)

A. V. HARTLE.

EARTH AUGBR.

No. 432,705. Paten'ed July 22, 1890i.y

Illllllll lIHH Hl Ulli' "7 d//M/ /JWWM/ AMERICUS V. IIARTLE,

EARTH- TnNT FFICE.`

OF MARSEILLES, OHIO.

Auena.

SPECIFICATION forming part of Letters Patent No. 432,705, dated July 22,1890.

Application iiled May 3, 1890.

To all whom it may concern.:

Be it known that I, AMERIcUs V. HARTLE, a citizen of the United Statesof America, residing at Marseilles, in the county of Vyandot and Stateof Ollio, have invented a new and useful Improvement in Earth-Angers, ofwhich the following is a specification.

My invention has relation to improvements in earth-angers ot that. kindusually employed for forming post-holes and similar excavations, and theobject is to provide an implement of the kind named, which will not onlyexpeditiously bore a post-hole, but one which, when so desired, may bereadily withdrawn from the excavation with the loosened earth.

Another object is to provide suoli an auger with an air-vent combiningthe functions of a reamer which may be adjusted and set at a position totravel at a greater distance from the axis of the auger than theperimeter of the auger.

I have fully and clearly illustrated my invention in the accompanyingdrawings, wherein-.-

Figure l is a view of my improved earthauger having the combined reamerand airvent rigidly Iixed thereto. Fig. 2 is a view of the saine havingthe combined reamer and air-vent made adjustable thereon. Fig. 3 is aview in detail, in enlarged scale, of the combined reamer and air-vent.

A designates the handle of the auger,wh ich is of the desired length andprovided with a cross-piece l at the top, by which the implement isturned in the operation of excavating. B vdesignates. the auger,consisting of the usual flat blades, having their meeting or boringedges curved into a scroll in crosssection and turned slightly upwardanddownward at opposite edges or ends, substantially as shown. These bladesare properly braced or stiiened at their connection t0 the stern by anysuitable means, as seen at 2. To one of the blades, at the outer edge orperimeter, is att-ached one end of my combined reamer and air-vent 3,which consists of a verticallyarranged narrow plate 4, having sharpenededges and formed with a central channel 5, extending for its length andacross the thick- Serial No. 350,458. (No model.)

ness of the auger-blade. The upper end. of the plate is bent down atsubstantially right angles and has the end secured to the stem, as seenat 6'.

As it may be necessary or desirable at times to reain the hole outlarger than the bore of the auger, I provide for the purpose by makingAthe combined reamer and air-vent adjustable on the auger, as follows:The plate 4 is turned upward to a plane corresponding to the face oftheaiiger-blade,fori11ing a foot 7, in which are formed elongated slots8, engaging on threaded studs 9 in the augerplate and adjustably heldthereon by nuts l0. The part 6 may be formed with a fork ll, to straddlethe stem of the auger, and the adjustment made by a bolt projectedthrough the holes and screwed up to clamp the stem. IVhile theadjustable feature of my invention is useful, the rigid reamer andvent-piece is all that is essential to complete practicability.

The earth-auger thus cnonstructed not only has its utility enhanced bythe cutting of the reamer in the earth, but when the augerwith its loadof earth is to be withdrawn the ventgroove aii'ords free access of airbelow the auger, and it is drawn out impeded only by the weight of thesoil thereon. It will be observed thatas the auger progresses in theoperation of boring the reamercuts the earth free at the edges of thehole, and at all times the air has access to the bottom of the hole`through the vent in the reamer.

Having thus described my invention, what I claim is l. An earth-augerconsisting of a stem and auger-blades and a combined reamer and airventconsisting ot a vertically-arranged narrow plate having sharpened edgesand vformed with a central channel extending the length thereof, saidplate having its lower end secured to the outer edge ot' one et theaugerblades and its upper end braced to the augerstem, substantially asdescribed.

2. In an earth-auger, the combination of the anger provided withthreaded studs and nuts, the auger-handle7 and the combined reamer andair-vent consistingof a verticallyarranged narrow plate having a centralgroove IOO extending thelength thereof, and formed With In Witnesswhereof I have hereunto set my a foot-piece having slots to engage thestuds hand in the presence of two attestng Witon the auger, and aninwardly-turned arm at nesses.

its upper end to engage the handle, whereby A. V. I-IARTLE. the renmerand Vent-piece may be adj ustably Vimesses: secured to Jche auger,substantially as and for THOS. L. BARTON,

the purpose specified. v S. S. SIMPSON.

